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sassy
Inheretance and polymorphism
3 Answer(s)      6 years ago
Posted in : Java Beginners



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December 26, 2008 at 6:41 AM


Hi friend,,


import java.awt.*;
import java.awt.Graphics2D;

public class RotationDemo extends StrokeThicknessExample {
private Color[] colors = {
Color.white, Color.green

};

public void paintComponent(Graphics g) {
clear(g);
Graphics2D graph = (Graphics2D)g;
drawGradientCircle(graph);
drawThickCircleOutline(graph);
// Move the origin to the center of the circle.
graph.translate(185.0, 185.0);
for (int i=0; i<20; i++) {
System.out.println("I >>>>>>>>>>>>>" + i);
graph.rotate(Math.PI/8.0);
graph.setPaint(colors[i%2]);
graph.drawString("Rose", 0, 0);
}
}

public static void main(String[] args) {
WindowUtilities1.openInJFrame(new RotationDemo(), 380, 400);
}
}

--------------------------------------------

import java.awt.*;

public class StrokeThicknessExample extends FontExample {
public void paintComponent(Graphics g) {
clear(g);
Graphics2D g2d = (Graphics2D)g;
drawGradientCircle(g2d);
drawBigString(g2d);
drawThickCircleOutline(g2d);
}

protected void drawThickCircleOutline(Graphics2D g2d) {
g2d.setPaint(Color.blue);
g2d.setStroke(new BasicStroke(8));
g2d.draw(getCircle());
}

public static void main(String[] args) {
WindowUtilities1.openInJFrame(new StrokeThicknessExample(),
380, 400);
}
}
---------------------------------------
import java.awt.*;

public class FontExample extends GradientPaintExample {
public FontExample() {
GraphicsEnvironment env =
GraphicsEnvironment.getLocalGraphicsEnvironment();
env.getAvailableFontFamilyNames();
setFont(new Font("Goudy Handtooled BT", Font.PLAIN, 70));
}

protected void drawBigString(Graphics2D g2d) {
g2d.setPaint(Color.black);
g2d.drawString("Roseindia", 25, 215);
}

public void paintComponent(Graphics g) {
clear(g);
Graphics2D g2d = (Graphics2D)g;
drawGradientCircle(g2d);
drawBigString(g2d);
}

public static void main(String[] args) {
WindowUtilities.openInJFrame(new FontExample(), 380, 400);
}
}


December 26, 2008 at 6:42 AM


import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;


public class ShapeExample1 extends JPanel {
private Ellipse2D.Double circle =
new Ellipse2D.Double(10, 10, 350, 350);
private Rectangle2D.Double square =
new Rectangle2D.Double(10, 10, 350, 350);

public void paintComponent(Graphics g) {
clear(g);
Graphics2D g2d = (Graphics2D)g;
g2d.fill(circle);
g2d.draw(square);
}

protected void clear(Graphics g) {
super.paintComponent(g);
}

protected Ellipse2D.Double getCircle() {
return(circle);
}

public static void main(String[] args) {
WindowUtilities1.openInJFrame(new ShapeExample1(), 380, 400);
}
}

--------------------------------------

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class WindowUtilities1 {

public static void setNativeLookAndFeel() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch(Exception e) {
System.out.println("Error occur: " + e);
}
}

public static JFrame openInJFrame(Container content,
int width,
int height,
String title,
Color bgColor) {
JFrame frame = new JFrame(title);
frame.setBackground(bgColor);
content.setBackground(bgColor);
frame.setSize(width, height);
frame.setContentPane(content);
frame.addWindowListener(new ExitListener());
frame.setVisible(true);
return(frame);
}

public static JFrame openInJFrame(Container content,
int width,
int height,
String title) {
return(openInJFrame(content, width, height, title, Color.white));
}

public static JFrame openInJFrame(Container content,
int width,
int height) {
return(openInJFrame(content, width, height, content.getClass().getName(), Color.white));


}
public void windowClosing(WindowEvent event) {
System.exit(0);
}
}


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